Gearbox assembly overturning clamp

Abstract

The utility model relates to the technical field of turnover clamps, and discloses a gearbox assembly turnover clamp which comprises a base, a clamping turnover structure is arranged at the top of the base, and the clamping turnover structure comprises a fixing box, two vertical rods, a folding mechanism, two rotating shafts, a turnover mechanism, two sets of clamping mechanisms, two mounting discs and a lifting mechanism. The fixing box is arranged on the top of the base, and the two vertical rods are both located on the top of the fixing box. By arranging the vertical rod, the folding mechanism, the rotating shaft, the overturning mechanism, the clamping mechanism and the mounting disc, the gearbox can be stably clamped, fixed and overturned, in the clamping and fixing process, the outer side of the gearbox can be exposed to the outside as much as possible, the gearbox is prevented from being blocked, the gearbox needs to be clamped again, and the machining cost is reduced. And by arranging the lifting mechanism, the gearbox can be conveniently driven to do lifting motion, and therefore the gearbox can be conveniently clamped and fixed by the clamping mechanism.

Description

Technical Field

[0001] This utility model relates to the field of flipping fixture technology, and in particular to a gearbox assembly flipping fixture. Background Technology

[0002] Tractors are important agricultural production tools, and the gearbox is a crucial component of them. The gearbox has a complex internal structure with many shafts and gears, and most of the gears are helical gears, which need to mesh with each other during assembly. In addition, the axial installation of shafts requires clearance, and multiple measurements are needed during assembly. Therefore, the gearbox housing needs to be flipped over during assembly and measurement.

[0003] According to Chinese Patent Publication No. CN219599303U, a tractor gearbox assembly tilting fixture is proposed. The upper and lower brake bearings in the tilting actuator brake the first rotating connecting shaft, which can stop the tilting at any time. The set corner motor drives the driving gear and the driven gear, which in turn drives the first L-shaped support plate and the second L-shaped support plate in the clamping and bearing mechanism to tilt. The gearbox is loaded and clamped simultaneously by the clamping block, the positioning cross plate and the positioning inclined seat, which can facilitate multi-face positioning and processing. By moving the second L-shaped support plate, the size of the clamping and bearing mechanism can be adjusted according to the size of the gearbox. The structure is compact, easy to operate, safe and reliable, and highly efficient. It can achieve automatic tilting and accurate positioning, and has a locking function.

[0004] While the current flipping fixture can clamp and flip the gearbox during use, it obstructs the bottom and sides of the gearbox during assembly. It can only assemble the gearbox from the top, front, and back. To assemble the bottom and sides of the gearbox, it is necessary to re-clamp the gearbox, which makes the assembly process more complicated and reduces the efficiency of gearbox assembly. Therefore, a gearbox assembly flipping fixture is proposed to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a gearbox assembly flipping fixture. By setting up a vertical rod, a closing mechanism, two rotating shafts, a flipping mechanism, a clamping mechanism, and a mounting plate, the gearbox can be stably clamped, fixed, and flipped. During the clamping and fixing process, the outer side of the gearbox can be exposed to the outside as much as possible, preventing the gearbox from being obstructed and affecting the gearbox assembly efficiency. It has the advantages of facilitating gearbox assembly and improving gearbox assembly efficiency.

[0007] (II) Technical Solution

[0008] This utility model provides a gearbox assembly flipping fixture, including a base, and the top of the base is provided with a clamping flipping structure.

[0009] The clamping and flipping structure includes a fixed box, two vertical rods, a closing mechanism, two rotating shafts, a flipping mechanism, two sets of clamping mechanisms, two mounting plates, and a lifting mechanism. The fixed box is located on top of the base, and the two vertical rods are both located on top of the fixed box. The closing mechanism is located inside the fixed box and is connected to the vertical rods to drive the two vertical rods to move. The two rotating shafts are rotatably connected to opposite sides of the two vertical rods, with the right rotating shaft extending to the right side of the right vertical rod. The flipping mechanism is located on the right side of the right vertical rod, and its output end is connected to the right rotating shaft for rotating the right rotating shaft. The two mounting plates are located at opposite ends of the two rotating shafts. The two sets of clamping mechanisms are respectively located on the outside of the two mounting plates. The lifting mechanism is located on top of the fixed box.

[0010] Preferably, both sets of clamping mechanisms include four side plates, four fixed plates, four first cylinders, four moving blocks, limiting rods, and four sets of first T-shaped assemblies. The four side plates are all located on the outer side of the mounting plate and are evenly distributed. The four fixed plates are respectively located on the side of the four side plates away from the same side rotation axis. The four first cylinders are respectively located on the side of the four fixed plates away from the same side mounting plate and extend to the other side. The four moving blocks are respectively located on the piston rods of the four first cylinders. The four limiting rods are respectively located on the side of the four moving blocks away from the same side rotation axis. The four sets of first T-shaped assemblies are respectively located on the side of the four moving blocks close to the same side rotation axis.

[0011] Preferably, each of the four sets of the first T-shaped components includes a first T-shaped groove and a first T-shaped block. The four first T-shaped grooves are respectively disposed on the side of the four side plates away from the same side rotation axis, and the four first T-shaped blocks are respectively disposed on the side of the four moving blocks close to the same side rotation axis. The four first T-shaped blocks are respectively slidably connected to the interior of the four first T-shaped grooves.

[0012] Preferably, the flipping mechanism includes a driven gear, a horizontal plate, a self-locking motor, and a driving gear. The driven gear is located at the right end of the rotating shaft on the right side, the horizontal plate is located on the right side of the vertical rod on the right side, the self-locking motor is located at the top of the horizontal plate, and the driving gear is connected to the output shaft of the self-locking motor via a coupling. The driving gear meshes with the driven gear.

[0013] Preferably, the closing mechanism includes a servo drive motor, a bidirectional screw, two threaded blocks, two translation plates, four support blocks, and four sets of second T-shaped components. The servo drive motor is located on the right side of the fixed box. The bidirectional screw is mounted on the output shaft of the servo drive motor via a coupling and extends into the interior of the fixed box. The two threaded blocks are threadedly connected to the two ends of the bidirectional screw with opposite thread directions. The two translation plates are located on the top of the two threaded blocks. The two vertical rods are connected to the top of the two threaded blocks. The four support blocks are located on the bottom of the two translation plates. The bottom of each of the four support blocks is slidably connected to the top of the base. The four sets of second T-shaped components are located on the bottom of the four support blocks.

[0014] Preferably, each of the four sets of the second T-shaped components includes a second T-shaped block and a second T-shaped groove. The second T-shaped block is located at the bottom of the support block, and the second T-shaped groove is opened at the top of the base. The second T-shaped block is slidably connected to the inside of the second T-shaped groove.

[0015] Preferably, the lifting mechanism includes a second cylinder and a lifting plate, the second cylinder being located on the top of the fixed box, and the lifting plate being located on the piston rod of the second cylinder.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] The gearbox is equipped with a flipping fixture. By setting up a vertical rod, a closing mechanism, a rotating shaft, a flipping mechanism, a clamping mechanism, and a mounting plate, the gearbox can be stably clamped, fixed, and flipped. During the clamping and fixing process, the outer side of the gearbox can be exposed to the outside as much as possible to prevent the gearbox from being obstructed and requiring re-clamping, which would affect the efficiency of gearbox assembly. The lifting mechanism is set up to facilitate the lifting and lowering of the gearbox, thereby facilitating the clamping and fixing of the gearbox. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a gearbox assembly flipping fixture proposed in this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the vertical rod, rotating shaft, and flipping mechanism in a gearbox assembly flipping fixture proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the clamping mechanism and mounting plate in a gearbox assembly flipping fixture proposed in this utility model.

[0021] Figure 4This is an exploded cross-sectional view of the clamping mechanism in a gearbox assembly flipping fixture proposed in this utility model.

[0022] Figure 5 This is an exploded view of the base, fixing box, and closing mechanism in a gearbox assembly flipping fixture proposed in this utility model.

[0023] Reference numerals: 1. Base; 2. Fixing box; 3. Vertical rod; 4. Closing mechanism; 41. Servo drive motor; 42. Bidirectional screw; 43. Threaded block; 44. Translation plate; 45. Support block; 46. Second T-shaped assembly; 461. Second T-shaped block; 462. Second T-shaped groove; 5. Rotating shaft; 6. Flipping mechanism; 61. Driven gear; 62. Horizontal plate; 63. Self-locking motor; 64. Driving gear; 7. Clamping mechanism; 71. Side plate; 72. Fixing plate; 73. First cylinder; 74. Moving block; 75. Limiting rod; 76. First T-shaped assembly; 761. First T-shaped groove; 762. First T-shaped block; 8. Mounting plate; 9. Lifting mechanism; 91. Second cylinder; 92. Lifting plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1-5 As shown, the present invention proposes a gearbox assembly flipping fixture, which includes a base 1 and a clamping flipping structure on the top of the base 1.

[0028] The clamping and flipping structure includes a fixed box 2, two vertical rods 3, a closing mechanism 4, two rotating shafts 5, a flipping mechanism 6, two sets of clamping mechanisms 7, two mounting plates 8, and a lifting mechanism 9. The fixed box 2 is located on the top of the base 1, and the two vertical rods 3 are both located on the top of the fixed box 2. The closing mechanism 4 is located inside the fixed box 2 and is connected to the vertical rods 3 to drive the two vertical rods 3 to move. The two rotating shafts 5 are rotatably connected to the opposite side of the two vertical rods 3. The right rotating shaft 5 extends to the right side of the right vertical rod 3. The flipping mechanism 6 is located on the right side of the right vertical rod 3, and the output end of the flipping mechanism 6 is connected to the right rotating shaft 5 for the rotation of the right rotating shaft 5. The two mounting plates 8 are both located at the opposite end of the two rotating shafts 5. The two sets of clamping mechanisms 7 are respectively located on the outside of the two mounting plates 8. The lifting mechanism 9 is located on the top of the fixed box 2.

[0029] In this utility model, the fixed box 2 and the closing mechanism 4 can drive the two vertical rods 3 to move to the opposite side or the opposite side. The two vertical rods 3 will drive the two rotating shafts 5, the two mounting plates 8 and the two sets of clamping mechanisms 7 to move to the opposite side or the opposite side, thereby adjusting the distance between the two sets of clamping mechanisms 7, so that the two sets of clamping mechanisms 7 can clamp tractor gearboxes of different sizes.

[0030] When assembling the tractor gearbox, first place the tractor gearbox on the lifting mechanism 9. The lifting mechanism 9 moves the gearbox upward, positioning it between the two clamping mechanisms 7. Then, the fixing box 2 and the closing mechanism 4 move the two clamping mechanisms 7 to opposite sides, thus clamping and fixing the tractor gearbox. Next, the lifting mechanism 9 returns to its original position. At this point, the clamping mechanisms 7 can clamp and fix the gearbox while also supporting it. Finally, the flipping mechanism 6 drives the rotating shaft 5 and the clamping mechanisms 7 to rotate, causing the tractor gearbox to flip.

[0031] like Figure 1-4 As shown, in an optional embodiment, both sets of clamping mechanisms 7 include four side plates 71, four fixed plates 72, four first cylinders 73, four moving blocks 74, limiting rods 75, and four sets of first T-shaped assemblies 76. The four side plates 71 are all located on the outside of the mounting plate 8 and are evenly distributed. The four fixed plates 72 are respectively located on the side of the four side plates 71 away from the same side rotation axis 5. The four first cylinders 73 are respectively located on the side of the four fixed plates 72 away from the same side mounting plate 8 and extend to the other side. The four moving blocks 74 are respectively located on the piston rods of the four first cylinders 73. The four limiting rods 75 are respectively located on the side of the four moving blocks 74 away from the same side rotation axis 5. The four sets of first T-shaped assemblies 76 are respectively located on the side of the four moving blocks 74 close to the same side rotation axis 5.

[0032] In use, the lifting mechanism 9 drives the tractor gearbox to move upward, so that the tractor gearbox corresponds to the mounting plate 8. Then, the closing mechanism 4 moves the two mounting plates 8 and the two sets of clamping mechanisms 7 to the opposite side, so that the two ends of the tractor gearbox are respectively located inside the four limit rods 75 on the same side, and at the same time, the two mounting plates 8 abut against the left and right sides of the gearbox respectively.

[0033] Next, the four first cylinders 73 are activated respectively. The four first cylinders 73 will drive the four moving blocks 74 to move inward to the same side mounting plate 8. The four moving blocks 74 will drive the four limit rods 75 to move inward to the same side mounting plate 8. When the outer sides of the four limit rods 75 are in contact with the outer side of the tractor gearbox, the two sides of the gearbox can be supported and clamped by the two mounting plates 8 and the four limit rods 75 to ensure the stability of the gearbox during clamping. At the same time, when clamping the gearbox, the outer side of the gearbox can be exposed to the outside as much as possible to prevent the gearbox from being obstructed and affecting the gearbox assembly efficiency.

[0034] like Figure 3-4 As shown, in an optional embodiment, each of the four sets of first T-shaped components 76 includes a first T-shaped groove 761 and a first T-shaped block 762. The four first T-shaped grooves 761 are respectively disposed on the side of the four side plates 71 away from the same side rotation axis 5, and the four first T-shaped blocks 762 are respectively disposed on the side of the four moving blocks 74 close to the same side rotation axis 5. The four first T-shaped blocks 762 are respectively slidably connected to the inside of the four first T-shaped grooves 761.

[0035] It should be noted that the first T-shaped groove 761 and the first T-shaped block 762 can guide and limit the moving block 74, ensuring the stability of the movement of the moving block 74 and further ensuring the stability of the movement of the limiting rod 75. At the same time, the first T-shaped groove 761 and the first T-shaped block 762 can also prevent the limiting rod 75 from tilting outward when supporting the gearbox.

[0036] like Figure 1-2 As shown, in an optional embodiment, the flipping mechanism 6 includes a driven gear 61, a horizontal plate 62, a self-locking motor 63, and a driving gear 64. The driven gear 61 is located at the right end of the right rotating shaft 5, the horizontal plate 62 is located on the right side of the right vertical rod 3, the self-locking motor 63 is located at the top of the horizontal plate 62, and the driving gear 64 is located on the output shaft of the self-locking motor 63 via a coupling. The driving gear 64 meshes with the driven gear 61.

[0037] After the gearbox is clamped by the two sets of clamping mechanisms 7, the self-locking motor 63 is started. The output shaft of the self-locking motor 63 drives the drive gear 64 to rotate. The drive gear 64 drives the driven gear 61 that meshes with it to rotate. The driven gear 61 drives the right rotating shaft 5 to rotate. The right rotating shaft 5 drives the right clamping mechanism 7 to rotate. Under the action of the left rotating shaft 5 and the left clamping mechanism 7, the gearbox can be rotated, so that the gearbox can be flipped and assembled, which facilitates the assembly operation of the gearbox.

[0038] like Figure 1 as well as Figure 5 As shown, in an optional embodiment, the closing mechanism 4 includes a servo drive motor 41, a bidirectional screw 42, two threaded blocks 43, two translation plates 44, four support blocks 45, and four sets of second T-shaped components 46. The servo drive motor 41 is located on the right side of the fixed box 2. The bidirectional screw 42 is mounted on the output shaft of the servo drive motor 41 via a coupling and extends into the interior of the fixed box 2. The two threaded blocks 43 are threadedly connected to the two ends of the bidirectional screw 42 with opposite thread directions. The two translation plates 44 are located on the top of the two threaded blocks 43. The two vertical rods 3 are connected to the top of the two threaded blocks 43. The four support blocks 45 are located on the bottom of the two translation plates 44. The bottom of the four support blocks 45 is slidably connected to the top of the base 1. The four sets of second T-shaped components 46 are located on the bottom of the four support blocks 45.

[0039] After aligning the tractor gearbox with the mounting plate 8, the servo drive motor 41 is started. The output shaft of the servo drive motor 41 drives the bidirectional screw 42 to rotate. Because the inner side of the fixed box 2 and the threaded block 43 are both square and slidably connected, the threaded block 43 will not rotate. When the bidirectional screw 42 rotates, it will drive the two threaded blocks 43 to move to the opposite side under the action of the thread thrust. The two threaded blocks 43 will drive the two translation plates 44 to move to the opposite side respectively. The two translation plates 44 will drive the two vertical rods 3 to move to the opposite side respectively. The two vertical rods 3 will drive the two rotating shafts 5, the two sets of clamping mechanisms 7 and the two mounting plates 8 to move to the opposite side respectively. Thus, the opposite side of the two mounting plates 8 will abut against the two sides of the gearbox. At the same time, the two sides of the gearbox will be located inside the clamping mechanism 7 on the same side respectively.

[0040] In addition, when the two threaded blocks 43 move to the opposite side, the two threaded blocks 43 will drive the two translation plates 44 to move to the opposite side, and the two translation plates 44 will drive the two support blocks 45 on the left and right sides to move to the opposite side respectively. The two support blocks 45 can support the translation plates 44 on the same side. At the same time, the second T-shaped component 46 guides and limits the support blocks 45 and translation plates 44 on the same side to ensure the stability of the movement of the translation plates 44, and further ensures the stability of the movement of the vertical rod 3.

[0041] like Figure 1 as well as Figure 5 As shown, in an optional embodiment, each of the four sets of second T-shaped components 46 includes a second T-shaped block 461 and a second T-shaped groove 462. The second T-shaped block 461 is located at the bottom of the support block 45, and the second T-shaped groove 462 is opened at the top of the base 1. The second T-shaped block 461 is slidably connected to the inside of the second T-shaped groove 462.

[0042] The second T-shaped block 461 and the second T-shaped groove 462 can limit the movement of the support block 45, ensuring the stability of the movement of the support block 45 and further ensuring the stability of the movement of the vertical rod 3. At the same time, the second T-shaped block 461 and the second T-shaped groove 462 can also ensure the load-bearing capacity of the two vertical rods 3 when the two sets of clamping mechanisms 7 clamp the gearbox, preventing the vertical rods 3 from tipping over due to the weight of the gearbox.

[0043] like Figure 1 As shown, in an optional embodiment, the lifting mechanism 9 includes a second cylinder 91 and a lifting plate 92. The second cylinder 91 is located on the top of the fixed box 2, and the lifting plate 92 is located on the piston rod of the second cylinder 91.

[0044] When assembling the gearbox, the gearbox must first be placed on top of the lifting plate 92. Then, the second cylinder 91 is activated, and the piston rod of the second cylinder 91 drives the gearbox to move upward. After the gearbox is clamped by the two sets of clamping mechanisms 7, the two sets of clamping mechanisms 7 can support the gearbox. The second cylinder 91 is activated in the opposite direction, so that the lifting plate 92 moves downward back to the initial position, and the bottom of the gearbox can be assembled without causing the gearbox to flip.

[0045] like Figure 1-5 As shown, in an optional embodiment, a controller is provided on the outer end face of the vertical rod 3. The first cylinder 73, the self-locking motor 63, the servo drive motor 41 and the second cylinder 91 are all electrically connected to the controller. The controller can control the first cylinder 73, the self-locking motor 63, the servo drive motor 41 and the second cylinder 91.

[0046] It should be noted that when the controller controls the four first cylinders 73 on the left or the four first cylinders 73 on the right, it controls the four first cylinders 73 on the left or the four first cylinders 73 on the right separately, thereby ensuring that the four limit rods 75 on the left or the four limit rods 75 on the right can all abut against the gearbox.

[0047] Working principle:

[0048] The gearbox is equipped with a tilting clamp. In use, the tractor gearbox is first placed on top of the lifting plate 92. Then, the second cylinder 91 is activated, causing its piston rod to move the gearbox upwards, aligning it with the mounting plate 8. Next, the servo drive motor 41 is activated, causing the two rotating shafts 5, the two clamping mechanisms 7, and the two mounting plates 8 to move to opposite sides. When the opposite sides of the two mounting plates 8 are in contact with the sides of the gearbox, and the sides of the gearbox are located inside the clamping mechanism 7 on the same side, the four first cylinders 73 are activated. These four first cylinders 73 will then drive four moving blocks 74 to move inwards towards the mounting plate 8 on the same side. The four limiting rods 75 are moved inward to the same side mounting plate 8. When the outer sides of the four limiting rods 75 are in contact with the outer side of the tractor gearbox, the two sides of the gearbox can be supported and clamped by the mounting plates 8 on both sides and the four limiting rods 75, ensuring the stability of the gearbox during clamping. At the same time, when clamping the gearbox, the outer side of the gearbox can be exposed to the outside as much as possible to prevent the gearbox from being obstructed and affecting the assembly efficiency of the gearbox. Then, the second cylinder 91 is started in reverse, so that the lifting plate 92 moves downward back to the initial position. Finally, the self-locking motor 63 is started, which drives the gearbox to rotate, so that the gearbox can be flipped for assembly, which facilitates the assembly operation of the gearbox.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gearbox assembly flip jig comprising a base (1), characterised in that, The base (1) is provided with a clamping and flipping structure at its top; The clamping and flipping structure includes a fixed box (2), two vertical rods (3), a closing mechanism (4), two rotating shafts (5), a flipping mechanism (6), two sets of clamping mechanisms (7), two mounting plates (8), and a lifting mechanism (9). The fixed box (2) is located on the top of the base (1), and the two vertical rods (3) are located on the top of the fixed box (2). The closing mechanism (4) is located inside the fixed box (2) and is connected to the vertical rods (3) to drive the two vertical rods (3) to move. The two rotating shafts (5) rotate. The rotating shaft (5) on the right side extends to the right side of the vertical rod (3) and the flipping mechanism (6) is located on the right side of the vertical rod (3). The output end of the flipping mechanism (6) is connected to the rotating shaft (5) on the right side for rotating the rotating shaft (5). The two mounting plates (8) are located at opposite ends of the two rotating shafts (5). The two clamping mechanisms (7) are located on the outside of the two mounting plates (8). The lifting mechanism (9) is located on the top of the fixed box (2).

2. A gearbox assembly turnover fixture according to claim 1, wherein, Both sets of clamping mechanisms (7) include four side plates (71), four fixed plates (72), four first cylinders (73), four moving blocks (74), limiting rods (75), and four sets of first T-shaped assemblies (76). The four side plates (71) are all located on the outside of the mounting plate (8) and are evenly distributed. The four fixed plates (72) are respectively located on the side of the four side plates (71) away from the rotating shaft (5) on the same side. The four first cylinders (73) are respectively located on the side of the four fixed plates (72) away from the mounting plate (8) on the same side and extend to the other side. The four moving blocks (74) are respectively located on the piston rods of the four first cylinders (73). The four limiting rods (75) are respectively located on the side of the four moving blocks (74) away from the rotating shaft (5) on the same side. The four sets of first T-shaped assemblies (76) are respectively located on the side of the four moving blocks (74) close to the rotating shaft (5) on the same side.

3. A gearbox assembly turnover fixture according to claim 2, wherein, Each of the four sets of the first T-shaped components (76) includes a first T-shaped groove (761) and a first T-shaped block (762). The four first T-shaped grooves (761) are respectively located on the side of the four side plates (71) away from the same side rotation axis (5). The four first T-shaped blocks (762) are respectively located on the side of the four moving blocks (74) close to the same side rotation axis (5). The four first T-shaped blocks (762) are respectively slidably connected to the inside of the four first T-shaped grooves (761).

4. A gearbox assembly turnover fixture according to claim 1, wherein, The flipping mechanism (6) includes a driven gear (61), a horizontal plate (62), a self-locking motor (63), and a driving gear (64). The driven gear (61) is located at the right end of the rotating shaft (5) on the right side. The horizontal plate (62) is located on the right side of the vertical rod (3) on the right side. The self-locking motor (63) is located at the top of the horizontal plate (62). The driving gear (64) is connected to the output shaft of the self-locking motor (63) via a coupling. The driving gear (64) meshes with the driven gear (61).

5. A gearbox assembly turnover fixture according to claim 1, wherein, The closing mechanism (4) includes a servo drive motor (41), a bidirectional screw (42), two threaded blocks (43), two translation plates (44), four support blocks (45), and four sets of second T-shaped components (46). The servo drive motor (41) is located on the right side of the fixed box (2). The bidirectional screw (42) is mounted on the output shaft of the servo drive motor (41) via a coupling and extends into the interior of the fixed box (2). The two threaded blocks (43) are respectively threaded to the... The two ends of the bidirectional screw (42) have opposite thread directions. The two translation plates (44) are respectively located on the top of the two threaded blocks (43). The two vertical rods (3) are respectively connected to the top of the two threaded blocks (43). The four support blocks (45) are respectively located at the bottom of the two translation plates (44). The bottom of the four support blocks (45) is slidably connected to the top of the base (1). The four sets of the second T-shaped components (46) are respectively located at the bottom of the four support blocks (45).

6. A gearbox assembly turnover fixture according to claim 5, wherein, Each of the four sets of the second T-shaped components (46) includes a second T-shaped block (461) and a second T-shaped groove (462). The second T-shaped block (461) is located at the bottom of the support block (45), and the second T-shaped groove (462) is opened at the top of the base (1). The second T-shaped block (461) is slidably connected to the inside of the second T-shaped groove (462).

7. A gearbox assembly turnover fixture according to claim 1, wherein, The lifting mechanism (9) includes a second cylinder (91) and a lifting plate (92). The second cylinder (91) is located on the top of the fixed box (2), and the lifting plate (92) is located on the piston rod of the second cylinder (91).

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